His obsession with taking everything apart and inspecting it (in this case, a lens cap) from Dave:
His goofball sense of humor can be blamed on both of us:
But the physical resemblance that most people point out to us?
Good old Grandpa Joe:
When we put this hat on Will's head at the store, it instantly reminded us of my wonderful grandfather, and even Dave swore we had to take it home:
He would have been so tickled to meet his little doppelganger, the boy who inherited his gray eyes and prominent ears and happy-go-lucky nature--but I have to remind myself that this is how it's supposed to be, that the great-grandfather lives on in the great-grandson.